Internal-combustion engine.



H. B. WOOLERY. INTERNAL COMBUSTION ENGINE.

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1,101 ,374, Patented June 23, 191 1 IZZY i/WZW Attorneys scenes 2. WOOLEBY, or mum, MINNESOTA.

INTERNAL-COMBUSTION ENGINE.

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Specification of Letters Patent.

Patented June 23, 1914.

Application tiled December 8, 1918. Serial No. 805,083.

To all whom it may concern:

Be it known that I, Hermon E. WOOLERY,

a citizen of the United States, residing at Fairmont, in the county of Martin and State of Minnesota, have invented a new and useful Internal-Combustion Engine, of which the following is a s ecitication.

This invention re ates to internal combustlon engines.

An object of the present invention is to provide an internal combustion engine of the two cycle type which may be throttled to low speeds wlthout retarding the spark and without causing the engines to miss explosions.

Another object is to provide an internal combustion engine with an auxiliary by pass for the admission of fuel and wh1ch communicates with the combustion chamber uxtaposed the spark plug so that small charges may be introduced within the combustion chamber and may be successfully exploded.

A further object is to provide a valve which will supply fuel to the main intake port of the engine or may supply fuel to a y ass which leads to the u per extremity of t 1e combustion chamber whereby the fuel will be heated while traversing the passage to the auxiliary inlet port and by means of which small quantities of fuel may be exploded so that the engine may run at excessively low speed under light loads or while running free, and without causing the en ine to miss explosions.

TVith the foregoing and other objects in view which willappear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departin from the spirit of the invention.

In t 1e drawings accompanying this specification and forming a part thereof, the preferable form of my invention is illustrated, in which:

Figure 1 is a longitudinal sectional view of the up or portion of my improved internal combustion engine. Fig. 2 is a similar view in which the piston is re resented at its lowermost point 0 travel an the throttling valve has closed the main intake port and the gaseous fuel must pass through the auxiliary by-pass.

Referring to the drawings in which similar-reference numerals designate correspondmgparts throughout the several views the engine cylinder 3 is provided with the piston head 4, which latter controls the exhaust ort 5 and inlet port 6 in the usual manner.

he piston head is provided with the usual rings 7, wrist pin 8, and battle plate 9. The cylinder 3, at its upper portion, tapers to form the combustion chamber 10 in the upper extremity of which is positioned the ignition apparatus illustrated m the present rawings as taking the form of a spark plug 11. Located on approximately the same horizontal plane with the spark lug 11 is the valve 12. The valve is of tlie puppet type and includes the valve head 13 and s ank 14. The shank 14 extends through an apertured boss 15 and is provided at its outer extremity with a collar or nut 16. A 5 ring 17 engages the collar or nut and resiliently holds the valve in a closed position. An

auxiliary by pass 18 communicates with and is controlled by the valve. The auxiliary passage or by pass 18 extends down the side wall of the cylinder and communicates with a throttling valve 19. Thus it will be apparent that the gaseous fuel which makes lts way or passes through the passage 18 will be heated to a high temperature so that it will be in a highly combustible condition upon its entrance into the combustion chamber through the puppet valve 12.

The fuel supply passage 20 is enlarged as at 21 and in which enlargement is located the valve 19. The valve 19 is of the rocking type and is provided with a main passage 22 leading therethrough and which controls the amount of fuel supplied to the cylinder through the intake port 6. The valve 19 is also provided with the auxiliary opening 23 extending therethrough and which controls the quantity of carbureted air or fuel supplied to the auxiliary passage 18.

When it is desired to run the engine at normal speeds and under normal loads the throttlin valve is positioned with the openin 22 tliereof communicatin with the intalie port 6 so that the carliureted air or fuel will be supplied to the intake port (3 in the usual manner. When, however, it is desired to run the engine at excessively low speed or under little or no load, the intake port 6 is closed by turning the valve to the position illustrated.

The auxiliary passage or opening 23 allows a limited quantity of fuel to pass through the b -pass and through the puppet valve 12. "he quantity of fuel passing through the opening 23 may be regulated b rotate ing the valve and may be entirely c osed by rotating the valve in an anti-clockwise direction from the position shown in Fig. 2.. It is noted that the auxiliary charge which passes through the valve 12 will enter the combustion chamber at such times as the internal ressure within the combustion chamber is lower than the pressure within the auxiliar byass minus the force ex erted upon t 1e va ve by means of the spring 17. The resilienc of spring 17 can be changed so that t e fuel can be admitted under the proper conditions.

The man advantages accruing from the structure disclosed it is thought will be apparent, among which is mentioned the high temperature to which the fuel will heated durmg its passa e through the auxiliary bypass thus provi ing for a more highly com.- bustible mixture and one which will more easily ignite. A further advantage is due to the fact that a limited charge may be admitted in the combustion chamber adjacent the i nition device so that exceedingly small charges may be admitted into the engine cylinder or combustion chamber and properly exploded. It has been found in practice to be extremely difiicult to throttle engines of the present type to low speeds largely due to the fact that if a small char e be introduced through the ordinary int re port 6, the quantity of heated gases in the cylinder will be relatively largie with respect to the quantity of combusti le mixture therein so that the combustible uses do not come into contact with the ignition device with the result that the engine misses explosions. However,

when the engine is to be run at normal speed under -normal loads the quantity of gas admitted in the cylin er is suiiicient to insure the ignition thereof. With the device herein disclosed, a small quantity of carbureted air or gaseous air is introduced in the combustion chamber upon ap roximately the same plane as the i nition evice so that an explosion is insure regardless of the quantity of gases within the cylinder. Thus the engine maybe run at excessively low speeds and without requiring that the spark be retarded.

Having thus fully described my invention, what I claim is A two cycle explosive engine including a cylinder with a conical combustion chamber disposed in the up er portion thereof, ignition means exten ing within said conical combustion chamber in the apex thereof, said cylinder provided with inlet and exhaust ports, a. piston slidably disposed in said cylinder and controlling the said ports, a valve controlling the inlet port, an auxiliary by-passage communicating with said valve extendin to and communicating with the apex of sait combustion chamber, an au tomatie valve disposed in the upper portion of said by-pass, said inlet port controlling valve provided wit-h a restricted passage extending therethrough adapted to supply limited quantity of fuel to the said auxiliary by-passage.

In testimony that I claim the foregoing as my own, I have hereto afiixed my s1gnature in the presence of two witnesses.

HORACE E. WOOLERY.

Witnesses:

H. P. EDWARDS, G. F. Annnnson.

(topics 0! this patent may be obtained for live cents each, by addressing the Commissioner of Patents.

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